Car body-bolster.



Patented Aug. I2, |902. G. G. FLOYD. cA BODY aoLsTEn. (Application fle June 11, 1902.)

[gg i 4 O (No Model.)

LVVE/VOR V I. i I l ll l UNITED STATES PATENT OFFICE.

GEORGE G. FLOYD, OF ST. LOUIS, MISSOURI, ASSIGNOR TO AMERICAN STEEL-BODY DOUBLE-BOLSTER OO., OF ST. LOUIS, MISSOURI, A COR- PORATION OF NEW JERSEY.

CAR BODY-BOLSTER'.

SPECIFICATION forming part `ofl Lettersrllatent No. 706,647, dated August 12, 1902., Application filed .Tune 11,1902. Serial 110.1114163. (No model.)

Be it known that I, GEORGE G. FLOYD, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented a new and useful Improvement in Car`Body` Bolsters, of which the following is a specification.

My invention relates to a double body-bolster for railroad-cars.

An ordinary double body-bolster usually comprises two single body-holsters having top and bottom plates or archlbars, respecg tively, with their thimbles and connecting bolts, a longitudinal truss connecting the two body-holsters together and having the body center-bearin g and center-platecastings secured thereto, all of said parts being separate pieces built up and connected together by bolts or other fastenings, thereby rendering the structure as a whole complicated and cumbersome. jar to which the parts are subjected the fastenings are liable to Work loose, which destroys the rigidity of the bolster and necessitates constant inspection and frequent repairs.

My invention has for its object to combine these separate parts in a single piece, preferably of cast-steel, having its component members so arranged and the metal distributed therethrough as to produce a compact, rigid,

anddurabl'e double body-bolster specially` adapted to withstand the varying strainsto which it is subjected and at the same time insure the maximum of strength with a mini-` mum weight of material. Y

The invention consists in features of novelty, as hereinafter described and claimed, reference being had to the accompanying drawings, forming part of this specification, whereon- Figure 1 is atop plan of my improved double body-bolster for railroad-cars; Fig. 2, a longitudinal Vertical section through the bolster on line 2 2 in Figrl, showing the sills of the car in transverse section; Fig. 3, an end view ofthe bolster; and Figs. 4 and 5 transverse sections thereof on lines e at and 5 5, respectively,` in Fig. 1.

Like letters and numerals of reference denote like parts in all the ligures.

Moreover, by the continual A represents my improved* double bodybolster, which consists of two side beams .a of a doublereversed-Z shape, respectively,

in cross-section and arranged opposite and 'parallel to each other at a suitable distance apart. The top flanges 1 of each beam cr are straight and adapted to bear against the under sides of the car-sills b b transversely thereto,` while its base 2 (corresponding to the integrally-united flanges of two `ordinary, Z-

beams) is preferably straight at the middle portion and thence inclined toward the top flanges l. The side beams a are united at their middle portions toan intermediate crossbeam c, which is also of a double-reversed-Z shape iu cross-section, having its top iianges 3 iiush with the top anges l of the side beams a, and adapted to bear against the under sides of the car-sills b, longitudinally thereto. The end portions of the cross-beam c intersect the side beams a, their top flanges 3 spanning the spaces between the top fianges 1 thereat.

Across the space between the top anges,

1 8 of theside beams a, the top ofthe plates d being iiush with the top `lianges 1 and 3 of the beams @and c, respectively, and adapted to bear against the under sides of the carsills b longitudinally thereto. On the under sides of the plates d are formed the lugs 9, to which the ends of the truss-rods (not shown) are coupled.

On the under sides of the side beams a, at their middle portion, are formed a series of ribs 10, which extend along the beams a to a suitable distance on each sideof thelongitudinal center line of the cross-beam c, 4and thereby stiften the bolster A at the-junctions of the beams a and c.

All the parts above described-to wit., the

IOO

y side beams a, with their ribs 10, the crossbeams a and c and through the end plates d are holes 11 for receiving the bolts (not shown) by which the body-bolster Ais secured to the car-sills b'.

e e are the side bearings, which are shown integral with the side beams 0.; but they may be separate and -attached thereto, as found preferable.

By the above construction of intersecting double-reversed-Zfshaped beams a and c, combined with the intersecting end plates d, the bearing of the bolster A against the carsills b b is subdivided and more advantageously distributed with less distance between the bearing-points than with single beams of Aordinary section and the stability of the car-body thereby proportionately increased. 4

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A car body-bolster, consisting of two opposite side beams, and a cross-beam intermediate to the side beams and united thereto, the said beams, respectively, being a doublesnaar? reversed-Z shape in cross-section, and adapt- 3 5 ed to bear against the car-sills, substantially as described.

2. A car body-bolster, consisting of two opposite side beams, and a cross-beam intermediate to the side beams, the said beams, respectively, being a'double-reversed-Z shape in cross-section, and adapted to bear against the car-sills, and the said cross-beam being integral with, and intersecting the side beams, substantially as described.

3. A car body-bolster, consisting of two opposite side beams, a cross-beam intermediate to the side beams, and united thereto at their middle portions, or thereabout, the said beams being,respectively,a double-reversed-Z shape in cross-section and intersecting each other, a cross-plate intermediate to and intersecting the side beams, and united thereto at their end portions, the said beams and plates being adapted to bear against the car-sills, and the said cross-beam and plates having, respectively, the body center-bearing, and the lugs for the truss-rods, all the said parts being integral throughout, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE G. FLOYD.

Witnesses:

O. T. LEDFORD, EDWARD VW. FURRELL. 

